2019-S American Silver Eagle Proof – Struck at the San Francisco Mint in 99.9% fine silver, this one-ounce proof coin showcases Adolph A. Weinman’s Walking Liberty design in frosted detail against brilliant mirror fields. The reverse features John Mercanti’s heraldic eagle with shield. Presented in its original U.S. Mint velvet case with outer box and Certificate of Authenticity, this “S” mintmark proof is a standout addition for collectors.